Across the great divide: revision of the genus Eupetaurus (Sciuridae: Pteromyini), the woolly flying squirrels of the Himalayan region, with the description of two new species Author Jackson, Stephen M. Author Li, Quan Author Wan, Tao Author Li, Xue-You Author Yu, Fa-Hong Author Gao, Ge Author He, Li-Kun Author Helgen, Kristofer M. Author Jiang, Xue-Long text Zoological Journal of the Linnean Society 2021 2021-05-31 194 2 502 526 http://dx.doi.org/10.1093/zoolinnean/zlab018 journal article 6197 10.1093/zoolinnean/zlab018 7beb4c6c-3524-4dcd-b349-f814be79781a 0024-4082 4923100 AC33BAD0-C05F-44BF-B3CB-72D674F93CE1 KEY TO THE SPECIES OF EUPETAURUS 1a. Temporal ridges parallel. Rostrum wide. Upper cheek teeth round in shape; lower molars have two anterior fossettids .................................................................................................... Eupetaurus nivamons 1b. Temporal ridges converge posteriorly. Rostrum narrow. Upper cheek teeth heart shaped; lower molars have one anterior fossettid ............................................................................................................................. 2 2a. Cusps and ridges of cheek teeth are robust; P 4 and P 4 significantly larger than the following molars; lower molars are subsquare in shape; anterior fossettid short ......................................... Eupetaurus cinereus 2b. Cusps and ridges of cheek teeth are less robust; P 4 and P 4 approximately equal in size to the following molars; lower molars subrectangular in shape; anterior fossettid long ............... Eupetaurus tibetensis